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Update GradiumTTSService to flush instead of ending stream #3597

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Update GradiumTTSService to flush instead of ending stream #3597

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1 change: 1 addition & 0 deletions changelog/3597.fixed.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
- Fixed an issue in `GradiumTTSService` where the websocket was being disconnected at the end of every bot turn.
8 changes: 6 additions & 2 deletions src/pipecat/services/gradium/tts.py
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Expand Up @@ -232,11 +232,15 @@ def _get_websocket(self):
raise Exception("Websocket not connected")

async def flush_audio(self):
"""Flush any pending audio synthesis."""
"""Flush any pending audio synthesis.

Sends a <flush> tag to force the model to output audio for all text
that has been input so far, without closing the connection.
"""
if not self._websocket:
return
try:
msg = {"type": "end_of_stream"}
msg = {"type": "text", "text": "<flush>"}
await self._websocket.send(json.dumps(msg))
except ConnectionClosedOK:
logger.debug(f"{self}: connection closed normally during flush")
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